The Massachusetts company recently opened its latest farm-based anaerobic digester, with seven more on the way. Waste Dive sat down with CEO John Hanselman to learn why his business works where others have failed.

Naysayers argue we'll continue to need nuclear power and natural gas plants, and an all-renewables grid will be too expensive. But none of their arguments stand up, writes the Environmental Working Group.

The agency's Annual Energy Outlook projects the U.S. will cut economy-wide carbon emissions 2.5% by 2050 — far less than the level scientists say is necessary to stave off the worst impacts of climate change.

The agreement drew support from the governor, the House and the Senate and will also require the utility to recycle at least a quarter of the 27 million cubic yards of coal ash it stores at its Virginia plants.

The new rule aims to mitigate "severe events" at U.S. nuclear reactors, but the Union of Concerned Scientists says a key provision was removed before the Republican-led Nuclear Regulatory Commission approved it 3-2.